fix look of the unknown field error in the homepage

index.html

@@ -111,7 +111,7 @@ <h2>Here to help</h2>
   ┌─ ./src/app.gleam:8:16
   │
 8 │ user.alias
-  │ <span class="code-error">^^^^^^^^^^ Did you mean `name`?</span>
+  │ <span class="code-error">    ^^^^^^ Did you mean `name`?</span>
 
 The value being accessed has this type:
     User